Tanzanite Gemstone in Rectangular Shape comes under the category of blue variety of zoisite gemstone. Shree Prakash Gems manufactures Tanzanite Gemstone in Rectangular Shape. Shree Prakash Gems also manufactures Tanzanite gems in different shapes. Tanzanite Gemstone in Rectangular Shape shows different colours when viewed in different directions. Its blue colour, which shimmers in a slightly purplish blue, is magnificent indeed. The hydrated calcium aluminium silicate miner achieves only hardness 6.5 to 7 on the Moh`s scale, and is thus not very resistant. It should be worn with care, never be cleaned by ultrasonic method and never come into contact with acids. The gemstone is offered in trichroic colour.
